https://devzone.nordicsemi.com/f/nordic-q-a/44396/nrf52840-sdk-15-2-and-ucirFor a client, I really to understand if SDK 15.2, its bootloader, matching software, etc use the UCIR in any fashion.en-USTelligent Community 13Tue, 05 Mar 2019 13:14:35 GMThttps://devzone.nordicsemi.com/thread/174262?ContentTypeID=1Tue, 05 Mar 2019 13:14:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e2e48c77-fb0f-42b4-96a7-d0679875b78a&#216;yvind<p>Hi,</p> [quote user=""]For a client, I really to understand if SDK 15.2, its bootloader, matching software, etc use the UCIR in any fashion.[/quote] <p>The bootloader information in the SDK v15.2.0 has a macro for getting the start address of the bootloader image. See more <a href="https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/group__nrf__bootloader__info">here</a>. Further, there is more information about the topic <a href="https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v15-2-0/sdk_app_serial_dfu_bootloader?query=dfu+bootloader+uicr">here</a>.<br /><br />In DevZone, there are some relevant cases like <a href="https://devzone.nordicsemi.com/f/nordic-q-a/43465/uicr-serial-number-dfu-compatibility-sdk-15-2">this</a>&nbsp;one, which deals with writing to <span>CUSTOMER field</span>&nbsp;in UICR.<br /><br />I hope this helps to understand.<br /><br />Kind regards,<br />Oeyvind</p><div style="clear:both;"></div>